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Top-Rated Addition to existing structure builders in Thermal - Updated Nov 2026

Avatar for McCormick Home Builders, Inc.
McCormick Home Builders, Inc.
4.7(
42
)
Addition to Existing Structure - Build

Serving Thermal, CA and surrounding areas

Approved

In business since 2017

Free estimates

Customers say: True professional

"We found McCormick home builders through Angie’s list. They were not one of our original contacts, but they contacted us and came out to give us a quote. Matteo was extremely helpful, informative, honest, and gave us reasonable realistic prices, and did not try to inflate the prices or pressure us in anyway. We felt very comfortable with him immediately. We felt like he was a member of the family that we could just talk to and ask questions he was very personable. He gave us his contact number in case we had other questions and he was always available when we needed him for any type of questions or concerns. Mateo‘s team did a beautiful job. They were fast. They were efficient. They cleaned up beautifully. They did a wonderful job. They were very considerate of our time our needs and our neighbors. They were an absolute pleasure to work with. I would highly recommend Matteo from McCormick home builders for any home building projects, and we will be calling him again in the future!"
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+1

Response time6 hrs
Recommended by17%of homeowners
Avatar for Armada Construction
Armada Construction
5.0(
15
)
Addition to Existing Structure - Build

Serving Thermal, CA and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"Armada was very honest with pricing and the time it would take to complete this project. After the details were finalized, they came to work and got in and out in the time frame they had told me it was going to take. Great attention to detail and solid work!"
Response rate96%
Recommended by86%of homeowners
Avatar for Linden Construction
Linden Construction
4.8(
5
)
Addition to Existing Structure - Build

Serving Thermal, CA and surrounding areas

Approved

In business since 2005

Free estimates

Credit card accepted

"Tim’s crew was great. They answered all of our questions and were great to work with. The project turned out well and Tim was responsive to concerns and changes that needed to be made."
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+3

10 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for MODERN TOUCH CONSTRUCTION
MODERN TOUCH CONSTRUCTION
5.0(
2
)
Addition to Existing Structure - Build

Serving Thermal, CA and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

We pride our company on reliability, great communication, integrity and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

new home build
new home build
new home build
new home build
new home build

+13

2 neighbors recently requested a quote
Avatar for OM Construction Inc
OM Construction Inc
4.7(
151
)
Addition to Existing Structure - Build

Serving Thermal, CA and surrounding areas

In business since 1990

Free estimates

Emergency services offered

"Tony and his team helped us immensely. We met him originally during the design phase of our project and from that time on he was there to help from beginning to end. The project was approximately 700 square feet and included adding two new bathrooms, a master bedroom and a full remodel of our kitchen. Tony and his project manager Marcos were always here to give us updates and share ideas. They even helped us with finding the best places to go for supplies (tile, windows, counters, etc). Two of our biggest concerns was that we wanted to stay in the house while construction was going on and that the project finished on time. Tony was able to finish this large addition and remodel all while we stayed in the home and within a week of our original deadline. His team was always there working and were very professional. We will definitely use Tony and his team again in the future!"
Roofing Project
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+86

Recommended by95%of homeowners
Avatar for Cielo Construction Company
Cielo Construction Company
4.6(
288
)
Addition to Existing Structure - Build

Serving Thermal, CA and surrounding areas

In business since 2004

Free estimates

Emergency services offered

"Sam has worked with us on our kitchen redesign and remodel, master bathroom remodeling, closet build out and our media center. Sam is very professional and honest person. His design work is extremely accurate and he never let us down. He is focused, pays attention to our ideas and visions and more than that, he was able to includes them in the design and remodeling. For any remodeling project, Sam is definitely the first one in our list to call."
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+87

Recommended by96%of homeowners
Avatar for Progressive Builders
Progressive Builders
5.0(
77
)
Addition to Existing Structure - Build

Serving Thermal, CA and surrounding areas

In business since 2006

Free estimates

Emergency services offered

"Great company, gave them a call to do some additions to my recently bought house and I was very pleased with their work. Highly recommend it to any one who needs work done, great people to do business with."
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+57

Recommended by100%of homeowners
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FAQs for addition to existing structure building service projects in Thermal, CA

You can typically raise your roof by four to eight feet, depending on your home's structure and roof design. The exact amount depends on factors like roof slope and framing support. Raising the roof creates additional interior space, enhances natural light, and increases your home's value. Consult a professional to determine the feasible height increase for your home.

Yes, you need a building permit to raise your roof. Obtaining a building permit ensures your project complies with local building codes and safety regulations. A professional contractor can assist with the permit and inspection process and ensure all legal and safety requirements are met. Your contractor will be familiar with building codes in your area, which can differ between cities or states.

While it's possible to raise a flat roof, it requires extensive structural modifications. Flat roofs lack the attic space and support structures of pitched roofs, so raising them involves significant engineering to ensure safety and durability. This process can be complex and costly, so professional assessment is essential before undertaking a project of this magnitude.

The Thermal, CA homeowners’ guide to addition to existing structure building services

From average costs to expert advice, get all the answers you need to get your job done.